Electromagnetic flowmeter M910
Operation manual
21
5.1.7 Datalogger
Number of samples stored in datalogger and percentage used.
Individual samples value can be read after pushing “RIGHT” key.
In this submenu samples are read sequentially. Next sample
(Flowrate with Date and Time) is displayed after pushing “UP”
key. “Sequential reading” submenu is left after pushing “RIGHT”
key or after displaying all values. After pushing “UP” key “Current
Flowrate / Total Volume” is displayed.
These formats are changed pushing key “UP” or by short activating of the magnet.
5.2 Setup menu
In this menu the flowmeter parameters (measuring, output, communication etc.) can be changed. Access to the
Setup menu
is enabled after pushing the “ENTER” key from the
Main menu
.
Note: The keyboard is accessible after unscrewing the cover of the electronic unit using the special wrench,
which is standard part of delivery.
Correct password must be entered before entering
Setup menu
. Without correct password the access to the
Setup
menu
is refused. Default factory set password is “00000”. Return to the
Main menu
is possible after pushing the
“ESC” key.
Setup menu
has the following structure (items are changed by pushing “UP” key and selected by pushing
“ENTER” key):
Setup Menu structure
5.2.1 Input and outputs configuration (1 INPUT/OUTPUT)
For the flowmeter outputs and input configuration. After pushing “UP” key next item (“2 FLOWMETER“) is
selected. After pushing “ENTER” key following submenu is displayed:
5.2.1.1
Current loop output (1.1 CURRENT)
Current loop 4 to 20 mA can be set as passive type between outputs 4, 5 (4 positive, 5 negative) or as active type
between outputs 5, 6 (5 positive, 6 negative). In both cases outputs are galvanically separated from all other
electronic circuits of the flowmeter. Voltage drop on the passive current loop is 4 V. Active current loop can work
to a maximum of 800
Ω
.
Current loop output can be programmed in one of the following modes:
a)
Off
current output is adjusted to 4mA (error message 01 - “Current output” is
switched off)
b)
Pos.Flow
current 4+16*Flowrate / QI [mA] is generated for a positive flowrate direction.
For a negative flowrate direction 4mA is generated.
c)
Neg.Flow
current 4-16*Flowrate / QI [mA] is generated for a positive flowrate direction.
For a positive flowrate direction 4 mA is generated.
d)
Abs.Flow
current 4+16*abs(Flowrate) / QI [mA] is generated for both flowrate directions.
e)
Bip.Flow
current 12+8*Flowrate / QI [mA] is generated for both flowrate directions.